Cornerstone Plumbing Company

Cornerstone Plumbing receives strong praise from many individual customers for specific technicians — particularly Zach, Dan, Steve, Brad, and Eric — who are frequently described as professional, knowledgeable, thorough, and courteous. However, the company is significantly dragged down by serious negative reviews that describe predatory pricing (a $3,700 quote for a job done elsewhere for unde... Read more

Cornerstone Plumbing receives strong praise from many individual customers for specific technicians — particularly Zach, Dan, Steve, Brad, and Eric — who are frequently described as professional, knowledgeable, thorough, and courteous. However, the company is significantly dragged down by serious negative reviews that describe predatory pricing (a $3,700 quote for a job done elsewhere for under $1,200), failed follow-through on callbacks, poor communication from management, and at least one catastrophic workmanship failure involving a replumb that caused thousands in water damage years later. Project completion is a notable weak point, with multiple reviews describing abandoned work, unresolved issues after years of engagement, and a refund situation where the wrong scope was accepted. Pricing is the lowest-scoring dimension due to explicit complaints about markups and a lack of transparency, pulling the overall score down substantially despite the volume of positive reviews. Read less